OSL  Orbiting Solar Laboratory  our window on the sun. 

 - [Washington?]  National Aeronautics and Space Administration  1991. 
 - 32 p.  col. ill.  28 cm. 
<br/><br/><label>LCCN: </label>doc92000111  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solar photosphere--Research--United States.<br/>Orbiting solar observatories--Research--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Outer Space--Exploration--Research--United States.
<br/><br/><label>GPO Item No.: </label>830-I 
<br/><br/><label>Gov. Doc. Class. No.: </label>NAS 1.83:143